Bug#801191: nvidia-driver: gdm3 can't start anymore (acceleration check failed)

[Manuel Bilderbeek]

Hi,

On 08-10-15 00:07, Andreas Beckmann wrote:
> That's a bit confusing ... so let's test something more.
>
> - can gdm3 be restarted?
>
>      invoke-rc.d gdm3 stop
>      invoke-rc.d gdm3 start
>
> (if that already fails, skip the reminder)

That doesn't fail, I get the normal gdm3 greeter.

> - let's do the module dance again, this should be successful:
>
>      invoke-rc.d gdm3 stop
>      rmmod nvidia           # should give no error
>      lsmod | grep nvidia    # should give no output
>      modprobe -v nvidia-current
>      ls -la /dev/nvidia*
>      invoke-rc.d gdm3 start # expect: OK

Yes, that was OK, see screenshot1 for what happened.

> - let's do the module dance again, and this I would expect to fail:
>
>      invoke-rc.d gdm3 stop
>      rmmod nvidia           # should give no error
>      lsmod | grep nvidia    # should give no output
>      modprobe -v nvidia

Notice the different insmod arguments here, see screenshot2.

>      ls -la /dev/nvidia*

Still shows 666, despite the insmod arguments.

>      invoke-rc.d gdm3 start # expect: FAIL

Indeed fails.

By the way, after this, if I simply do this:
$ sudo rmmod nvidia
$ insmod /the/whole/path/to/nvidia-current.ko

all works fine.

So, it looks like these modprobe arguments are causing the issues 
indeed. But why are they there not all the time?

-- 
Grtjs, Manuel

PS: MSX FOR EVER! (Questions? http://faq.msxnet.org/ )
PPS: Visit my homepage at http://manuel.msxnet.org/
-------------- next part --------------
A non-text attachment was scrubbed...
Name: screenshot2.png
Type: image/png
Size: 59803 bytes
Desc: not available
URL: <http://lists.alioth.debian.org/pipermail/pkg-nvidia-devel/attachments/20151008/faec93aa/attachment-0002.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: screenshot1.png
Type: image/png
Size: 56163 bytes
Desc: not available
URL: <http://lists.alioth.debian.org/pipermail/pkg-nvidia-devel/attachments/20151008/faec93aa/attachment-0003.png>